橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2010 Vol.33 No.1 P.56-59

 橡胶技术网

丁苯橡胶在热空气和海水中老化性能的比较

余超　 文庆珍　 余宏伟　 朱金华　

摘　要：对丁苯橡胶在热空气和海水中进行了加速老化试验,比较了老化前后其性能的变化,得出了该橡胶的性能变化与老化时间的函数关系,并建立了100%定伸应力和撕裂强度与硬度的关联关系.结果表明,在整个老化期间,丁苯橡胶的100%定伸应力和硬度逐渐增大,撕裂强度逐渐减小.在相同的温度下,老化初期在海水中丁苯橡胶的性能变化比在空气中的快,而老化后期在空气中的性能变化比在海水中快.丁苯橡胶的100%定伸应力和撕裂强度与硬度呈线性关系,说明通过硬度的变化监测丁苯橡胶力学性能的变化是可行的.
关键词：丁苯橡胶;热空气老化;海水老化;相关性
分类号：TQ333.1 　文献标识码：B
文章编号：1000-1255(2010)01-0056-04

Comparison of properties of styrene-butadiene rubber aged in sea water and in hot air

Yu Chao（Chemistry and Materials Department, Naval University of Engineering, Wuhan 430033, China）　 Wen Qingzhen（Chemistry and Materials Department, Naval University of Engineering, Wuhan 430033, China）　 Yu Hongwei（Chemistry and Materials Department, Naval University of Engineering, Wuhan 430033, China）　 Zhu Jinhua（Chemistry and Materials Department, Naval University of Engineering, Wuhan 430033, China）　

Abstract：The accelerated aging tests of styrene-butadiene rubber in hot air and in sea water were conducted, the properties of the rubber before and after aging were compared, the functional relationship between properties and aging time was achieved, and correlation between modulus at 100% and tear strength with Shore A hardness was established. The results showed that modulus at 100% and Shore A hardness increased and tear strength decreased with aging time. The properties change of the rubber in sea water more quickly than in hot air at the same temperature in the initial aging stage, and reversely in aging anaphase. The relationship between modulus at 100%, tear strength and Shore A hardness was liner.
Keywords：styrene-butadiene rubber; aging in hot air; aging in sea water; Correlation

作者简介：余超(1984-),男,硕士研究生.
作者单位：余超（海军工程大学,化学与材料系,湖北,武汉,430033）　
　　　　　文庆珍（海军工程大学,化学与材料系,湖北,武汉,430033）　
　　　　　余宏伟（海军工程大学,化学与材料系,湖北,武汉,430033）　
　　　　　朱金华（海军工程大学,化学与材料系,湖北,武汉,430033）　

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收稿日期：2008年10月29日

修稿日期：2009年11月15日

出版日期：2010年1月15日